Product Data Sheet Show all documents

Sikafloor® P 651

(former MTop P 651)

THREE COMPONENT TOTAL SOLIDS HIGH-BUILD EPOXY SURFACE SEALER AND PRIMER

Sikafloor® P 651 is a high grade, high-build, three component epoxy primer and surface sealer. Sikafloor® P 651 is used as a sealer or scratch coat with, and without, the addition of quartz sand.

  • High build
  • Total solids
  • Easy application
  • Medium viscosity
  • Seals very porous substrate
  • Short waiting times, faster drying
  • Good intercoat adhesion
  • Excellent bond strength
Product Data Sheet Show all documents

Usage

Sikafloor® P 651 is suitable for priming and  sealing of concrete surfaces. Sikafloor® P 651 may be mixed with sand to the desired consistency to repair patches or form covings. In either case the mixed mortar must be applied to a surface previously coated with Sikafloor® P 651 resin and whilst still tacky.  

Advantages

  • High build
  • Total solids
  • Easy application
  • Medium viscosity
  • Seals very porous substrate
  • Short waiting times, faster drying
  • Good intercoat adhesion
  • Excellent bond strength

Packaging

25.4 kg units (Part A+B+C)

Colour

Off-white liquid

Product Details

Product Information

Composition

Three component epoxy resin with selected fillers

Shelf life

12 months from date of production

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5°C and +30°C. Protect from direct sunlight, heat and moisture. In tropical climates the product must be stored in an air-conditioned environment.

Density

~1.55 kg/l (mixed, at 25°C)

Solid content by mass

~100 %

Note: Total solid epoxy composition acc. to the test method Deutsche Bauchemie e.V. (German Association for construction chemicals)

 
Technical Information

Flexural-strength

≥ 40 N/mm2 (at 25°C)(ASTM C580)

Tensile strength

≥ 15 N/mm2 (at 25°C)

(ASTM C307)

Tensile adhesion strength

≥ 1.5 N/mm2 (or failure in concrete)

(ASTM D4541)

Skid / slip resistance

~85(BS 7976, Part 2)

Service temperature

Dry heat permanent exposure up to +60°C. 

Application

Application Information

Ambient air temperature

+10°C min. / +40°C max.

Relative air humidity

80 % r.h. max.

Dew point

Beware of condensation!
The substrate and uncured floor must be at least 3°C above dew point to reduce the risk of condensation or blooming on the floor finish.
Note: Low temperatures and high humidity conditions increase the probability of blooming.

Substrate moisture content

< 5 % pbw moisture content.
Test method: Sika®-Tramex meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM D4236 (Polyethylene-sheet).

Pot Life

Temperature:Time:
+25°C~40 min.
+40°C~20 min.

Curing time

Full cure: ~7 days at +25°C

Curing times are approximate and will be affected by changing ambient conditions.

Waiting time to overcoating

Temperature:

Initial Cure:

+25°C

~15 h

+40°C

~10 h

Times are approximate and will be affected by changing ambient conditions.
Consumption

Consumption

From 0.30 - 0.35 kg/m2 depending on surface texture and porosity.

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc.
Application steps

APPLICATION INSTRUCTIONS

MIXING

Mix the base (Part A) and reactor (Part B) of Sikafloor® P 651 together, for a minimum of one minute, until it is streak free and then add the PTC powder (Part C) and mix for additional 2 minutes until a uniform even mix is achieved. Do not overmix.

APPLICATION

Apply the mixed Sikafloor® P 651 to the substrate, using a medium pile roller at suitable rate, depending on the absorption of the substrate. The surface of the primer must be glossy. Dry / matt areas must be re-primed.

 

CLEANING OF EQUIPMENT

Clean all tools and application equipment with suitable thinner (Xylene / MEK / Acetone), immediately after use. Hardened and/or cured material can only be removed mechanically.

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